What powers willem3.nl?

Last seen Aug 2026 · 20 technologies across 14 categories

Analytics

Matomo Analytics
since Aug 2020

CDN

Google Hosted Libraries
since Feb 2022

CMS

WordPress
since May 2020

Databases

MySQL
since May 2020

Email

Amazon SES
since Mar 2023
Sendgrid
since Aug 2022

Font scripts

Font Awesome
since Mar 2021
Google Font API
since Mar 2021

JavaScript libraries

jQuery v3.1.1
since Mar 2021
jQuery UI v1.13.3
since Jul 2021
OWL Carousel
since Mar 2021
Select2
since Jul 2021

Miscellaneous

PWA
since Aug 2022

PaaS

Amazon Web Services
since Mar 2023

Performance

Priority Hints
since Aug 2023

Programming languages

PHP
since May 2020
TypeScript
since Dec 2022

Security

HSTS
since Sep 2022

Web servers

Nginx v1.22.1
since Mar 2021

Widgets

FullCalendar v5.9.0
since Dec 2022

AI Crawlers

Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.

  • robots.txt found
  • llms.txt not found
  • ai.txt not found

See who blocks each AI crawler across the web

AI Crawlers

No AI crawlers blocked

Full breakdown

Audience

  • 57% desktop
  • 43% phone
  • Netherlands

Where the site's Chrome visitors come from, largest estimated audience first.

Open Page Rank

2.31 / 10 · ranked #2,860,024 of all domains

8 referring domains · OpenPageRank

Core Web Vitals

LCP1 s
INP50 ms
CLS0
TTFB500 ms

Real user p75, Chrome UX Report, Aug 2026.

Page

  • Language: Dutch
  • Weight: 9.0 MB · 65 requests
  • WordPress theme: designated-child · all themes
  • Structured data: JSON-LD, Microdata

Homepage as crawled by the HTTP Archive, Sep 2026.

Organisation

  • Willem III Rowing Club
  • Founded: 1882
  • Industry: Arts and entertainment (declares Event)
  • Country: Netherlands

From the homepage's own structured data (Sep 2026) and Wikidata (CC0).

Infrastructure

  • DNS: hostnet.nl
  • Email: smtp.goog
  • Email security: SPF (hard fail), DMARC reject, DNSSEC signed, CAA
  • SSL: Let's Encrypt, RSA 4096, expires Oct 2026
  • Common Crawl link graph: rank 17,265,039, 4 hosts

DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted

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